GASTEROPODA PKCTINIBRANCHIATA. /O 



Tho Clavalulce, in which the emaigination is wide and reaches 

 to the spire, are also properly distinguished. 



Wlien the spire is but sliglitly marked, flattened or rounded, and 

 the columella is without plicae, they are the Pyrula, Lam. Some are 

 umbilicated*, and otliers notf. 



From these Pyrulae, Montfort again separates the species with a 

 flattened spire, internally striated near the lip, by the name of Ful- 

 gur\. Tliey are a sort of Pyrulae Avith a i)licated columella, the 

 plicGe being so.iietimes almost insensible. 



Among these divisions of the Fusi of Br\igieres, the Fa^ciolaruB, 

 Lam,§, are distinguished by some oblique and well marked plicfE on 

 tlie columella, near the origin of the siphon|]. The 



Turbinella, Lam., 



Also consists of shells with a straight canal, but without varices,dis- 

 tinguishable by the large transverse plicae en their columella, which 

 extend tlie whole length of the aperture, and wliich closely approxi- 

 mate them to the conical Volutac; they only differ from the latter in 

 the elongation of their aperture into a sort of canal || ; the line that 

 separates them is not easily traced. The genus 



Strombup, Lin. 



Includes those shells with a canal that is either straight or inflected 

 towards the right, of v.'hich the external margin of the aperture di- 

 lates with age, but still preserves a sinus near the canal, under which 

 passes the head of the animal, when it extends itself. 



In most of them the sinus is at some distance from the canal. Thay 

 are subdivided by M. de Lamarclc into two subgenera. The 



Strombus, Lam. 

 In Avliich the margin expands into a wing of more or less extent, 



the immense numTjer of fossil species described by Lamarck and other conchy- 

 Hologists. 



* Mur. rape, Martini, III, Ixviii, 750, 733; — Buccinum bezoar, Gm., Martini, III, 

 Ixvlii, 754, 755. 



t Bulla Jicus, L., List., 750, 46: — Mu}-e.v Jicus, lb., 741. 



X Mure.T percersus, L., List., 907, 27; — Mur. aru amis, hist., 908, 28; — Mui: ca- 

 naUculatus, Martini, III, ls\-i, 738, 740, and Ixvii, 742, 3; — Mur. spirillus, Martini, 



III, CSV, 1069; — Pirula canallculata. Lam., Montf., 501?, which appears to me the 

 same as the Mur. carica, Martini, III, Ixvii, 744. 



§ Mur. fulipa, L., List., 910, 911 ; — Mur trapezium. List., 93, 26; — Mur polygo- 

 nns, List., 922, 15; — Mur. infundibulmn, Lisit., 921, 14; — Mur. sfriatulus, Martini, 



IV, cxlvi, 1351, 1352; — Mur. versicolor, lb., 1348; — Mur. pardalis. Id. cxlix, 

 1384; — Mur. cosiutus, Knorr., Pctrif., C, )i. 7; — Mur. Jancea, Martini, IV, cxlv, 

 1347. 



II Mur. scolymus, 'MaTtim,lY, csl'ii, 1325; — rduiu j)iii-um,Ma.Ttmi, III, xcv, 916, 

 917; — I'oluta ceramica, List., 820, 51 ; — Volnta rhinoceros, Chemn. X, 150, f. 1407, 

 \-iaB;—Voluta turbinellus, List., 811, 20; — JoZ. ca;)»7e//?,';.'i, List., 810, 19;— roL 

 globulus, Chemn., XI, 178, f., 1715; — J'ol. fv.rrita, Gm. 



